LI19 datalogger

LI19 for mobile measurements and short term datalogging

Hand-held read-out unit / datalogger

LI19 is a high accuracy handheld read-out unit / datalogger. It is used to make mobile measurements, for short term datalogging (as a static logger), and as an accurate millivolt amplifier directly connected to a PC. LI19 can be used with a variety of sensors. LI19’s most common application is with heat flux- and solar radiation sensors. LI19 battery life and memory allow continuous measurement for up to 50 days.

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Specifications
Description
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Specifications

output on display

heat flux, solar radiation

Input

analogue voltage

Conversion

division by the sensor sensitivity

Display definition

4 digits with sign

Display refreshment rate

1 s⁻¹

Calibration uncertainty

0.1 %

Temperature dependence

< 0.5 % + 3 x 10⁻⁶ V over rated range

Sample rate

2 s⁻¹

Rated input range

6.25 to 200 x 10⁻³ V (selectable)

A/D conversion

16 bits

Stored measurement definition

minimum maximum and average over storage interval with conversion to W/m²

Storage capacity

3518 measurements

Storage interval range

2 to 65535 s (selectable)

Compatibility with Hukseflux sensor models

SR05-A1, HFP01, SBG01, HF03

Battery type

2 x AA

Internal power supply voltage

3 VDC

Battery life

> 50 days (on fresh batteries)

Rated operating temperature range

-10 to +40 °C

System requirements for use with PC

Windows XP and higher

Connection to PC

USB 1.1 / 2.0 low speed

User interface on PC

LI19 software

IP protection class

IP40

Connection to sensor

2 x (female chassis plug for 4 mm banana with screwed signal wire clamp)

Weight

0.175 kg (net) 1.3 kg with carrying case

Dimensions LI19

(70 x 146 x 25) mm

Dimensions transport case

(400 x 300 x 120) mm

Downloads

LI19 hand-held read/out unit / datalogger brochure

LI19 hand-held read/out unit / datalogger user manual

Description

LI19 may be used with pyranometers and heat flux sensors

LI19 is typically used to display the measured solar radiation or heat flux. It measures a DC voltage. Once programmed with the sensitivity of the connected sensor, the display will show the actual value of the heat flux or solar radiation in W/m². LI19 is programmed through its PC user interface. We recommend downloading the latest software. LI19 is battery powered, using 2 x AA-type batteries. Fresh batteries allow more than 50 days of operation. The system is supplied in a practical transport case, for easy transport and protection during field measurement campaigns. LI19 is built for easy use with a large size LCD, displaying quantities in W/m², and a USB connection. LI19 may be used with pyranometers and heat flux sensors.